Staff Selection Commission Sub Inspector Exam
Question : The speeds of A and B are in the ratio 3 : 5. A takes 30 minutes more than B to reach the destination. In how much time does A reach the destination?
Option 1: 1 hour 15 minutes
Option 2: 1 hour 10 minutes
Option 3: 1 hour
Option 4: 1 hour 5 minutes
Correct Answer: 1 hour 15 minutes
Solution : The ratio of speeds of A and B = $3:5$ $\therefore$ The ratio of time of A and B = $5:3$ Let the times for A and B be $5x$ and $3x$. A takes = 30 minutes more than B Time difference
Question : Amartya Sen was awarded the Nobel Prize for his contribution to
Option 1: Monetary Economics
Option 2: Welfare Economics
Option 3: Econometrics
Option 4: Development Economics
Correct Answer: Welfare Economics
Solution : The correct option is - Welfare Economics.
Amartya Sen, an Indian economist, received the 1998 Nobel Prize in Economic Sciences in recognition of his contributions to welfare economics and social choice theory.
Sen is best known for his research on the causes of famine,
Question : What is the positive value of the following expression? $\sqrt{36 \div 15 \text { of } 2 \text { of }[25 \times 4 \div 4 \text { of }\{29-(8-11) \div(9 \times 5 \div 5 \text { of } 3)\}]}$
Option 1: $1 \frac{5}{6}$
Option 2: $1 \frac{1}{5}$
Option 3: $2 \frac{4}{5}$
Option 4: $2 \frac{3}{5}$
Correct Answer: $1 \frac{1}{5}$
Solution : Given: $\sqrt{36 \div 15 \text { of } 2 \text { of }[25 \times 4 \div 4 \text { of }\{29-(8-11) \div(9 \times 5 \div 5 \text { of } 3)\}]}$ = $\sqrt{36 \div 15 \text { of } 2 \text { of }[25
Question : Normally, how many times the human heart beats in a minute?
Option 1: 82
Option 2: 75
Option 3: 72
Option 4: 85
Correct Answer: 72
Solution : The correct option is 72.
The term "heartbeat" refers to the periodic contraction, and relaxation of the chambers of the heart, which results in the flow of blood throughout the body. Normally, a human heart beats 72 times in a minute which can vary
Question : Directions: Select the related letters/words from the given alternatives. JAUNDICE : AJNUIDEC :: METAPHOR : ?
Option 1: EMATHPRO
Option 2: EMAPROTH
Option 3: ETHPMARO
Option 4: EAMTHPRO
Correct Answer: EMATHPRO
Solution : Given: JAUNDICE : AJNUIDEC :: METAPHOR : ?
Shuffle the position of the letters of JAUNDICE, to obtain the required code – Thus, JAUNDICE is coded as AJNUIDEC. Similarly, follow the same pattern for METAPHOR –
Thus, METAPHOR is coded as EMATHPRO. Hence, the first
Question : Directions: If LACK is written as 396, then how will BACK be written as?
Option 1: 66
Option 2: 56
Option 3: 86
Option 4: 72
Correct Answer: 66
Solution : Given: LACK is written as 396.
Multiply the place value of letters of LACK, to obtain the required code – L→12; A→1; C→3; K→11 LACK = 12 × 1 × 3 × 11 = 396 Thus, LACK is coded as 396. Similarly, follow the same
Question : Directions: Three of the following four-letter clusters are alike in a certain way and one is different. Pick the odd one out.
Option 1: XCY
Option 2: OLP
Option 3: TGU
Option 4: BXC
Correct Answer: BXC
Solution : Let's check the options – First option: XCY→X + 1 = Y; X and C are opposite pairs. Second option: OLP→O + 1 = P; O and L are opposite pairs. Third option: TGU→T + 1 = U; T and G are opposite pairs. Fourth
Question : The average marks of students in five subjects in class X in a school are given in the table.
The average percentage marks of which of the following pairs of subjects was the same in 1985?
Option 1: Geography and Mathematics
Option 2: Science and Geography
Option 3: Science and English
Option 4: English and Mathematics
Correct Answer: Science and English
Solution : Considering option (1), we have, Marks of geography in 1985 = 35 Marks of mathematics in 1985 = $\frac{88}{200} \times 100$ = 44 Considering option (2), we have, Marks of science in 1985 = $\frac{120}{200} \times 100$ = 60 Marks of Geography in
Question : Directions: In the following question, three statements are given followed by three conclusions I, II and III. You have to consider the three statements to be true even if they seem to be at variance from commonly known facts. You have to decide which of the given conclusions, if any, follow from the given statements. Statements: Some hills are rivers. Some rivers are deserts. All deserts are roads. Conclusions: I. Some roads are rivers. II. Some roads are hills. III. Some deserts are hills.
Option 1: Only conclusion I follows
Option 2: Only conclusions I and II follow
Option 3: Only conclusions II and III follow
Option 4: None follows
Correct Answer: Only conclusion I follows
Solution : The possible Venn diagram, according to the given statements is as follows –
Let's analyse the conclusions – Conclusion (I): Some roads are rivers – From the diagram, it is evident that the circles representing roads and rivers overlap and have a
Question : Directions: If B denotes multiplication, C denotes subtraction, A denotes addition and D denotes division, which of the following equations is true?
Option 1: 24 D 12 B 3 A 12 = 18
Option 2: 36 D 6 B 3 A 2 = 74
Option 3: 42 A 7 B 2 D 2 = 35
Option 4: 56 D 14 B 2 C 4 = 12
Correct Answer: 24 D 12 B 3 A 12 = 18
Solution : Let's check the options – First option: 24 D 12 B 3 A 12 = 18 ⇒ 24 ÷ 12 × 3 + 12 = 18 Solving the L.H.S. of the equation – = 24 ÷ 12
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